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Effect of rolling on crack behavior of FeCrAl alloys in ultra-long life

Min Zhan (Failure Mechanics and Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China) (Department of Mechanics, Sichuan University, Chengdu, China)
Yajun Dai (Failure Mechanics and Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China) (Department of Mechanics, Sichuan University, Chengdu, China)
Chang Liu (Failure Mechanics and Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China) (Department of Mechanics, Sichuan University, Chengdu, China)
Xiangyu Wang (Failure Mechanics and Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China) (Department of Mechanics, Sichuan University, Chengdu, China)
Lang Li (Failure Mechanics and Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China) (Department of Mechanics, Sichuan University, Chengdu, China)
Yongjie Liu (Failure Mechanics and Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China) (Department of Mechanics, Sichuan University, Chengdu, China)
Chao He (Failure Mechanics and Engineering Disaster Prevention and Mitigation, Key Laboratory of Sichuan Province, Sichuan University, Chengdu, China) (Department of Mechanics, Sichuan University, Chengdu, China)
Qingyuan Wang (School of Architecture and Civil Engineering, Chengdu University, Chengdu, China)

International Journal of Structural Integrity

ISSN: 1757-9864

Article publication date: 12 September 2023

Issue publication date: 19 October 2023

78

Abstract

Purpose

The purpose of this paper is to determine (1) the relationship between microstructure and fatigue cracking behavior and (2) effect of rolling on the process of crack initiation and propagation in FeCrAl alloys.

Design/methodology/approach

The qualitative and quantitative fracture studies were performed using scanning electron microscopy and the non-contact optical measurement system (IFMG5).

Findings

The results show that the formation of facets, rough facets and parallel stripes in the crack initiation and early crack propagation zones are closely related to the sensitivity of crack behavior to the microstructure of the material. Besides, the rolling process has a significant influence on the small crack initiation and propagation behavior. Quantitative analysis demonstrates that the size of the stress intensity factor and plastic zone size in the rough zone is associated with the rolling process.

Originality/value

The findings of this study have the potential to enhance the understanding of the microstructural crack formation mechanisms in FeCrAl alloys and shed light on the impact of rolling on the long-term and ultra-long fatigue behavior of these alloys. This new knowledge is vital for improving manufacturing processes and ensuring the safety and reliability of FeCrAl alloys used in nuclear industry applications.

Keywords

Acknowledgements

This work was supported by the National Natural Science Foundation of China under Grant numbers 11832007, 12172238, 12072212 and 12002226, Sichuan Province Science and Technology Project under Grant numbers 2022JDJQ0011 and 23NSFJQ0075, the Natural Science Foundation of Sichuan Province under Grant number 2022NSFSC1977, and the Fundamental Research Funds for the Central Universities of Sichuan University under Grant number CJ202207.

Citation

Zhan, M., Dai, Y., Liu, C., Wang, X., Li, L., Liu, Y., He, C. and Wang, Q. (2023), "Effect of rolling on crack behavior of FeCrAl alloys in ultra-long life", International Journal of Structural Integrity, Vol. 14 No. 5, pp. 827-841. https://doi.org/10.1108/IJSI-05-2023-0037

Publisher

:

Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

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